"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 二级分区
Case Name   : range_hash二级分区表:insert/explain/index/create as/create like
Create At   : 2022/2/24
Owner       : opentestcase012
Description :
    1.创建二级分区表
    2.插入违反check约束的数据
    3.插入正确数据
    4.创建本地/唯一索引并查看索引
    5.查看执行计划
    6.create as创建表(普通表)
    7.create like(including all) from 分区表
    8.创建普通表
    9.创建表指定like including partition，使用partition by子句
    10.创建表指定like including partition
    11.创建表指定like
    12.查看分区信息
    13.清理环境
Expect      :
    1.成功
    2.合理报错
    3.成功
    4.成功
    5.成功
    6.成功
    7.合理报错
    8.成功
    9.合理报错
    10.合理报错
    11.成功
    12.成功
    13.清理成功
History     :
"""
import os
import re
import unittest

from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class Subpartition(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.t_name = 't_subpartition_0308'
        self.t_name_01 = 't_subpartition_0308_01'
        self.i_name_01 = 'i_subpartition_0308_01'
        self.i_name_02 = 'i_subpartition_0308_02'

    def test_subpartition(self):
        text = '-----step1:创建二级分区表 expect:成功-----'
        self.log.info(text)
        create_sql = f"drop table if exists {self.t_name};" \
            f"create table {self.t_name} (col_1 int primary key, " \
            f"col_2 int not null , col_3 varchar2 ( 30 ) not null , " \
            f"col_4 int generated always  as(2*col_2) stored , " \
            f"check (col_4 >= col_2))with(fillfactor=80) " \
            f"partition by range (col_1) subpartition by hash (col_2)" \
            f"( partition p_range_1 values less than( -10 )" \
            f"  ( subpartition p_hash_1_1 , subpartition p_hash_1_2 ," \
            f"    subpartition p_hash_1_3)," \
            f"  partition p_range_2 values less than( 20 )," \
            f"  partition p_range_3 values less than( 30)" \
            f"  ( subpartition p_hash_3_1 , subpartition p_hash_3_2 ," \
            f"    subpartition p_hash_3_3)," \
            f"    partition p_range_4 values less than( 50)" \
            f"  ( subpartition p_hash_4_1 , subpartition p_hash_4_2 ," \
            f"    subpartition t_subpartition_0350)," \
            f"  partition p_range_5 values less than( maxvalue )" \
            f") enable row movement;"
        msg = self.pri_sh.execut_db_sql(create_sql)
        self.log.info(msg)
        self.assertIn(self.constant.CREATE_TABLE_SUCCESS, msg, '执行失败:' + text)

        text = '-----step2:插入违反check约束的数据 expect:合理报错-----'
        self.log.info(text)
        sql = f"insert into {self.t_name} values (-1,-1,'aa'),(-5,5,'bb');"
        msg = self.pri_sh.execut_db_sql(sql)
        self.log.info(msg)
        self.assertIn(self.constant.violates_constraint_error_msg, msg,
                      '执行失败:' + text)

        text = '-----step3:插入正确数据 expect:成功-----'
        self.log.info(text)
        sql = f"insert into {self.t_name} values" \
            f"(1,1,'aa'),(5,5,'bb'),(11,2,'cc'),(19,8,'dd');"
        msg = self.pri_sh.execut_db_sql(sql)
        self.log.info(msg)
        self.assertIn(self.constant.INSERT_SUCCESS_MSG, msg, '执行失败:' + text)

        text = '-----step4:创建本地/唯一索引并查看索引 expect:成功-----'
        self.log.info(text)
        sql = f"drop index if exists {self.i_name_01}; " \
            f"create index {self.i_name_01} " \
            f"on {self.t_name}(col_1,col_3) local; " \
            f"drop index if exists {self.i_name_02}; " \
            f"create unique index {self.i_name_02} on {self.t_name}(col_2);" \
            f"select relname from pg_partition " \
            f"where relname='p_hash_1_1_col_1_col_3_idx';" \
            f"\d+ {self.t_name} "
        msg = self.pri_sh.execut_db_sql(sql)
        self.log.info(msg)
        self.assertEqual(2, msg.count(self.constant.CREATE_INDEX_SUCCESS_MSG),
                         '执行失败:' + text)
        self.assertIn(f'"{self.i_name_02}" UNIQUE, btree (col_2)', msg,
                      '执行失败:' + text)
        self.assertIn(f'"{self.i_name_01}" btree (col_1, col_3) LOCAL', msg,
                      '执行失败:' + text)
        self.assertIn('p_hash_1_1_col_1_col_3_idx', msg, '执行失败:' + text)

        text = '-----step5:查看执行计划 expect:成功-----'
        self.log.info(text)
        sql = f"explain analyze select * from {self.t_name} " \
            f"partition(p_range_1) where col_1 >5; " \
            f"explain analyze select * from {self.t_name} " \
            f"subpartition(p_hash_1_3);"
        msg = self.pri_sh.execut_db_sql(sql)
        self.log.info(msg)
        self.assertIn('Partitioned Bitmap Index Scan', msg, '执行失败:' + text)
        self.assertIn('Partitioned Seq Scan on', msg, '执行失败:' + text)

        text = '-----step6:create as创建表(普通表) expect:成功-----'
        self.log.info(text)
        sql = f"drop table if exists  {self.t_name_01};" \
            f"create table {self.t_name_01} as select * from {self.t_name};" \
            f"drop table if exists  {self.t_name_01};" \
            f"create table {self.t_name_01} " \
            f"as select col_1,col_2,col_3 from {self.t_name};"
        msg = self.pri_sh.execut_db_sql(sql)
        self.log.info(msg)
        self.assertEqual(2, msg.count(self.constant.INSERT_SUCCESS_MSG),
                         '执行失败:' + text)

        text = '-----step7:create like(including all) from 分区表 ' \
               'expect:合理报错-----'
        self.log.info(text)
        sql = f"drop table if exists  {self.t_name_01};" \
            f"create table {self.t_name_01} " \
            f"(like {self.t_name} including all );"
        msg = self.pri_sh.execut_db_sql(sql)
        self.log.info(msg)
        self.assertIn('Create Table like with subpartition only support '
                      'range strategy.', msg, '执行失败:' + text)

        text = '-----step8:创建普通表; expect:成功-----'
        self.log.info(text)
        sql = f"drop table if exists {self.t_name_01};" \
            f"create table {self.t_name_01} (col_1 int primary key, " \
            f"col_2 int not null , col_3 varchar2 ( 30 ) not null , " \
            f"col_4 int generated always  as(2*col_2) stored , " \
            f"check (col_4 >= col_2));"
        msg = self.pri_sh.execut_db_sql(sql)
        self.log.info(msg)
        self.assertIn(self.constant.CREATE_TABLE_SUCCESS, msg,
                      '执行失败:' + text)

        text = '-----step9:创建表指定like including partition，使用partition by子句; ' \
               'expect:合理报错-----'
        self.log.info(text)
        create_sql = f"drop table if exists {self.t_name};" \
            f"create table {self.t_name} (like {self.t_name_01} " \
            f"including partition )with(fillfactor=80) " \
            f"partition by range (col_1) subpartition by hash (col_2)" \
            f"( partition p_range_1 values less than( -10 )" \
            f"  ( subpartition p_hash_1_1 , subpartition p_hash_1_2 ," \
            f"    subpartition p_hash_1_3)," \
            f"  partition p_range_2 values less than( 20 )," \
            f"  partition p_range_3 values less than( 30)" \
            f"  ( subpartition p_hash_3_1 , subpartition p_hash_3_2 ," \
            f"    subpartition p_hash_3_3)," \
            f"    partition p_range_4 values less than( 50)" \
            f"  ( subpartition p_hash_4_1 , subpartition p_hash_4_2 ," \
            f"    subpartition t_subpartition_0350)," \
            f"  partition p_range_5 values less than( maxvalue )" \
            f") enable row movement;"
        msg = self.pri_sh.execut_db_sql(create_sql)
        self.log.info(msg)
        self.assertIsNotNone(
            re.search(self.constant.unsupport_error_msg, msg, re.S),
            '执行失败:' + text)

        text = '-----step10:创建表指定like including partition; expect:合理报错-----'
        self.log.info(text)
        create_sql = f"drop table if exists {self.t_name};" \
            f"create table {self.t_name} (like {self.t_name_01} " \
            f"including partition );"
        msg = self.pri_sh.execut_db_sql(create_sql)
        self.log.info(msg)
        self.assertIn(' could not specify "INCLUDING PARTITION" '
                      'for non-partitioned-table', msg, '执行失败:' + text)

        text = '-----step11:创建表指定like; expect:成功-----'
        self.log.info(text)
        create_sql = f"drop table if exists {self.t_name};" \
            f"create table {self.t_name} (like {self.t_name_01} " \
            f")with(fillfactor=80) " \
            f"partition by range (col_1) subpartition by hash (col_2)" \
            f"( partition p_range_1 values less than( -10 )" \
            f"  ( subpartition p_hash_1_1 , subpartition p_hash_1_2 ," \
            f"    subpartition p_hash_1_3)," \
            f"  partition p_range_2 values less than( 20 )," \
            f"  partition p_range_3 values less than( 30)" \
            f"  ( subpartition p_hash_3_1 , subpartition p_hash_3_2 ," \
            f"    subpartition p_hash_3_3)," \
            f"    partition p_range_4 values less than( 50)" \
            f"  ( subpartition p_hash_4_1 , subpartition p_hash_4_2 ," \
            f"    subpartition t_subpartition_0350)," \
            f"  partition p_range_5 values less than( maxvalue )" \
            f") enable row movement;"
        msg = self.pri_sh.execut_db_sql(create_sql)
        self.log.info(msg)
        self.assertIn(self.constant.CREATE_TABLE_SUCCESS, msg,
                      '执行失败:' + text)

        text = '-----step12:查看分区信息; expect:成功-----'
        self.log.info(text)
        select_sql = f"select relname, parttype, partstrategy, boundaries " \
            f"from pg_partition where partstrategy !='n' and parentid = " \
            f"(select oid from pg_class where relname = '{self.t_name}')" \
            f" order by relname;" \
            f"select a.relname,a.parttype,a.partstrategy,a.indisusable " \
            f"from pg_partition a,(select oid from pg_partition where " \
            f"parentid = (select oid from pg_class where " \
            f"relname = '{self.t_name}')) b where a.parentid = b.oid " \
            f"order by a.relname;"
        msg = self.pri_sh.execut_db_sql(select_sql)
        self.log.info(msg)
        partition = ['p_range_1', 'p_range_2', 'p_range_3', 'p_range_4',
                     'p_range_5', 'p_hash_1_1', 'p_hash_1_2', 'p_hash_1_3',
                     'p_range_2_subpartdefault1', 'p_hash_3_1', 'p_hash_3_2',
                     'p_hash_3_3', 'p_range_5_subpartdefault1',
                     f'{self.t_name}']
        for par in partition:
            self.assertIn(par, msg, '执行失败:' + text)

    def tearDown(self):
        self.log.info('-----step13:清理环境-----')
        text_1 = '-----删除表 expect:成功-----'
        self.log.info(text_1)
        del_cmd = f'drop table if exists {self.t_name};' \
            f'drop table if exists {self.t_name_01};'
        msg = self.pri_sh.execut_db_sql(del_cmd)
        self.log.info(msg)

        self.assertEqual(2, msg.count(self.constant.TABLE_DROP_SUCCESS),
                         '执行失败:' + text_1)
        self.log.info(f'-----{os.path.basename(__file__)} end-----')
